... Function:inflating pressure,release pressure 1/8 MNPT air control valve Material:Brass,ironAir Inlet:1/8"-27NPTTop quality and competitive ... release pressure and connect.1.Manufacture directly 2.Top quality and competitive price3.OEM accept 4.Good after-sale ... Our production include, AIR TOOLS,CAR DETECTOR,AIR ACCESSORIES ,COUPLERS,AIR PU HOSE,PRESSURE PAINT TANK,AIR REGULATORS,AIR BLOW GUNS And so ...